This part I disagree with, it says you gain the targets physical scores and type and everything, not that you become that creature. You're still you. Whether spell effects follow you or not, I have no idea.
The point that you're either still under the effects of PAO and therefore still a sarrukh, or not and therefore lose the INT, is a good one though. I think I have to agree there, even if I'm not sure which is true.